储能装置在多能流系统中的作用分析

Function analysis of energy storage device in multi-energy flow system

为了探究储能装置在多能流系统中的作用,构建了耦合风能、太阳能的有储能装置与无储能装置的两种多能流系统。建立了在晴朗的夏季典型日,系统24 h运行费用最小为目标函数的优化调度模型,以某工业园区为研究对象,进行了优化分析,并以此为基础,对比分析了两种系统在典型日运行费用、可再生能源消纳率、各时刻允许源荷波动的范围大小等几个方面的差异。最后,采用蒙特卡洛模拟法,对比研究了负荷不确定性对两系统典型日最小运行费用的影响大小。结果表明,有储能系统可以节约运行费用、消纳更多的可再生能源、在大部分时刻允许源荷两侧的波动范围更大,典型日最小运行费用受负荷不确定性影响较小。

In order to explore the function of energy storage device in multi-energy flow system,two kinds of multi-ener-gy flow systems coupled with wind and solar energy were constructed with or without energy storage device respectively.An optimization scheduling model for a typical sunny day in summer was established,targeting minimum operating cost as objective function.Optimization analysis was conducted on an industrial park.The differences of typical daily oper-ating cost,renewable energy consumption rate,allowable fluctuation range of source and charge between two systems were compared and analyzed.Finally,Monte Carlo simulation method was used to compare and study the influence of load uncertainty on a typical daily minimum operating cost of the two systems.The results show that for the system e-quipped with energy storage device,operation cost is saved with more renewable energy consumption,more adaptable to the fluctuation of source and charge,less operation cost and less affected by load uncertainty.